linux-kernel - Re: [PATCH 2/3] staging: lustre: lnet: Allocate MEs and small MDs in own kmem

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Date:	Wed, 15 Jun 2016 04:02:40 +0100 (BST)
From:	James Simmons <jsimmons@...radead.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
cc:	"Faccini, Bruno" <bruno.faccini@...el.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"Dilger, Andreas" <andreas.dilger@...el.com>,
	"Drokin, Oleg" <oleg.drokin@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: Re: [PATCH 2/3] staging: lustre: lnet: Allocate MEs and small MDs
 in own kmem_caches


> > This may also possibly help to save cycles due to high usage and
> > contention when using a generic kmem_cache (when they stay separate
> > from others, thanks for the precision!).
> 
> Have you measured this?
> 
> This isn't applicable for 4.7-rc at this time, _unless_ it fixes a bug,
> which is why I pushed back on this.  If you want your own cache for
> these variables, fine, I don't care, but that makes it a 4.8-rc1 patch
> instead.
> 
> hope that helps explain things better,

As a side question when is the window to push patches of this class?
Is it when 4.7-rc7 is merged to staging?